Can I save data in Microsoft Excel format?

Data can be streamed to Microsoft Excel using WinDaq/XL (see https://www.dataq.com/products/windaq/windaqxl/product.html. Data can also be exported to Excel after acquisition using WinDaq Waveform Browser. Read the article How to Import Recorded Data to Excel at https://www.dataq.com/data-acquisition/excel/data-acquisition-in-microsoft-excel-how-to-import-recorded-data.html.

Does the device have internal memory (i.e. can I record in stand-alone mode)?

The DI-2008 stores acquired data to a connected PC using either WinDaq Acquisition software or by writing your own program. The device does not have hardware to store data to internal memory or removable memory. The nearest device that can is the DI-808 at https://www.dataq.com/products/di-808/.

Is software included with the device?

WinDaq Data Acquisition and Playback Software is included free and provided as a download.

Where do I download the software?

Download software at run.dataq.com. The direct .exe download is available at https://www.dataq.com/support/downloads/DATAQ-Software-Suite-Web-Setup.exe.

How do I unlock my device?

If you purchase an unlock code when you order a DI-2008, the device ships unlocked and you do not need to do anything. If you purchased an Unlock code to upgrade in the field you can unlock the device following the instructions in the pdf manual (https://www.dataq.com/resources/pdfs/manuals/di-2008-usb-voltage-thermocouple-daq.pdf - Chapter 5, Unlock WinDaq).

How often should I get the DI-2008 re-calibrated?

The DI-2008 should be re-calibrated annually.

Can I program this device in Python, C#, or .NET?

The published protocol (download at https://www.dataq.com/resources/pdfs/misc/Dataq-Instruments-Protocol.pdf) of the DI-2008 is available for programming in any language. View our GitHub page (https://github.com/dataq-instruments) for example programs. A .NET class is also available at https://www.dataq.com/products/sdk-dot-net/dotnet-class.html.

Does the DI-2008 include digital or analog output channels?

The DI-2008 has seven bi-directional digital ports.

DI-2008-DIRECT Thermocouple and Voltage DAQ for Mac and Chromebook

Q: Can I measure Thermocouple temperatures?

The DI-2008 is specifically designed to measure and record thermcouple temperature measurements as well as voltage measurements.

Q: Is the DI-2008 Isolated?

Each DI-2008 analog input is electrically isolated from other channels and from ground for safe and accurate measurements in the presence of common mode voltages. Channel isolation means that each analog input is free to float to an independent common mode voltage imposed upon it by the signal source up to 120 V rms, and still provide an accurate and noise-free measurement.

Q: Does the DI-2008 include a calibration certificate?

All new DI-2008 instruments ship with an NIST-traceable calibration certificate.

Description

DI-2008-DIRECT USB Thermocouple Data Acquisition system with Windaq Direct Suite. Specially configured for Mac, Chromebook, Linux, SnapDragon laptop and more. Features 8 analog input channels programmable as a thermocouple or voltage input, 16-bit measurement resolution, and a full scale range of ±10mV to ±50V for voltage measurements or Thermocouple types J, K, T, B, R, S, E, or N.

Eight analog input channels adapt to a wide range of measurement types and applications. Each channel can be independently programmed for a thermocouple or voltage measurement. Programmed as a voltage channel you can select one of twelve measurement ranges from ±10 mV to ±50 V. Programmed as a thermocouple channel you can select from eight thermocouple types: J, K, T, B, R, S, E, or N. Linearization and junction compensation are automatically applied by the DI-2008-DIRECT for the selected TC type to deliver values scaled in either °C or °F. Finally, all analog measurements benefit from a 16-bit ADC resolution to reveal even the smallest signal variations.

Enter the WinDaq™ Direct suite

Enter the WinDaq™ Direct suite—a revolutionary pair of high-performance web applications that bring the raw speed and hardware connectivity of classic desktop WinDaq directly to your internet browser, featuring a no-programming, point-and-click user interface.

WinDaq™ Direct Acquisition: Experience true plug-and-play data logging over Mac, Chromebook, SnapDragon and Linux system. This application connects directly to your DI-2008-DIRECT straight from your browser. Configure channels, apply real-time mathematical DSP, utilize digital storage oscilloscope trigger sweeps, and view live FFT or XY plots—all while streaming data flawlessly to a local file.

WinDaq™ Direct Waveform Browser: The ultimate successor to the classic WinDaq Waveform Browser (WWB). Instantly load, view, and analyze massive data acquisition files (.wdq, .wdh, .gbd, and .csv) entirely within your browser window. Just like the classic WWB, it automatically extracts channel metadata, applies y=mx+b scaling, and extracts trailing event markers (including precise timestamps and user comments), featuring a dropdown menu that allows you to jump instantly to critical moments in your data.

The Core Advantages:: 100% Secure and Local: "Browser-based" does not mean "cloud-uploaded." Whether you are logging live data or analyzing historical files, your data never leaves your computer. The applications interface strictly with your local hardware and hard drive, ensuring total data privacy, offline capability, and compliance with strict IT security protocols.

Hardware-Accelerated Rendering: While traditional web charts choke on large datasets, the WinDaq Direct Waveform Browser leverages an ultra-fast graphical engine. It renders millions of multi-channel data points smoothly, matching the high-speed panning and zooming engineers expect from native desktop software.

Zero-Footprint Agility: No software to download, install, or manage. Work seamlessly across Windows PCs, MacBooks, Chromebooks, and Linux environments. If you have a modern web browser, you have a professional-grade data acquisition system.

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Specifications

Allows you to power 5V rating sensor with a battery. Input voltage: DC8-35V, (12V/24V changes to 5V); Output parameter: DC5V 3A, 15W MAX

4-20mA Output High Accuracy Pressure Sensors

Starting at $79

Learn More

Description

CBL-100805

6.6 ft USB-C to Mini USB Cable

$12.00

Add to Cart

Description

6.6 ft USB-C to Mini USB Cable. Recommended for connection to laptops, Mac and Chromebook for use with WinDaq Direct.

FC-1

USB Ferrite Choke

$5.00

Add to Cart

Description

Ferrite choke reduces interference for USB-based data acquisition products.

Software

Frequently Asked Questions

Can I record 4-20mA sensor signals and if so, how do I do that?
4-20-mA process current signals can be measured with the DI-2008. See How to make 4-20mA current Loop Measurements for more information.

Can I connect and measure data from a single-ended sensor?
Yes. Single-ended sensors can be connected and measured. The best practice is to connect the ground wire to the negative input of the channel.

Can I measure Thermocouple temperatures?
The DI-2008-DIRECT is specifically designed to measure and record thermcouple temperature measurements as well as voltage measurements.

Is the DI-2008-DIRECT Isolated?
Each DI-2008-DIRECT analog input is electrically isolated from other channels and from ground for safe and accurate measurements in the presence of common mode voltages. Channel isolation means that each analog input is free to float to an independent common mode voltage imposed upon it by the signal source up to 120 V rms, and still provide an accurate and noise-free measurement.

Does the DI-2008-DIRECT include a calibration certificate?
All new DI-2008-DIRECT instruments ship with an NIST-traceable calibration certificate.

Can I get the DI-2008-DIRECT re-calibrated?
Recalibration service is available and can be ordered online.

How often should I get the DI-2008-DIRECT re-calibrated?
The DI-2008-DIRECT should be re-calibrated annually.

Is my sensor compatible with this device?
Maybe. The many gain factors and voltage ranges available on the DI-2008-DIRECT allow for many sensors to be compatible with the device. See how fine a measurement you can make with your sensor using the ADC Resolution Calculator. If you have any questions about compatibility just send your sensor information to our sales team at sales@dataq.com.

Does the DI-2008-DIRECT include digital or analog output channels?
The DI-2008-DIRECT has seven bi-directional digital ports, and they can be controlled by WinDaq Direct Automated Test Sequencer

My sensor requires a power source, can the DI-2008-DIRECT provide that power?
Yes. The DI-2008-DIRECT can provide +15V power by connecting the appropriate wire to the +15V pin. Be sure your sensor does not exceed the excitation output spec: +15 V dc (-7.5% to +2.5%) at 70% load (47 mA), 67 mA at full load.

Specifications

Analog Inputs

Number of Channels:

8

Configuration:

Differential, Isolated

Programmable measurements per channel:

Voltage, Thermocouple

Programmable thermocouple types and measurement range per channel:

Over 25 ±5 °C ambient temperature range.
Stable ambient temperature.
Following 30 minutes warm-up.
Excluding common mode error.
Excluding thermocouple error.

Thermocouple Type	Temperature Measurement Range (°C)	Accuracy (°C)
J	-190 to 1200	±(0.1% of span + 2)
K	-180 to 1360	±(0.1% of span + 2)
T	-190 to 400	±(0.1% of span + 1)
B	600 to 1000 1001 to 1810	±(0.2% of span + 4) ±(0.1% of span + 3)
R	-40 to 300 301 to 1760	±(0.2% of span + 6) ±(0.1% of span + 3)
S	-40 to 400 401 to 1750	±(0.2% of span + 6) ±(0.1% of span +3)
E	-160 to 990	±(0.1% of span + 1)
N	-170 to 50 51 to 1290	±(0.1% of span + 3) ±(0.1% of span + 1)

Programmable voltage measurement ranges per channel:

±10 mV, ±25 mV, ±50 mV, ±100 mV, ±250 mV, ±500 mV, ±1 V, ±2.5 V, ±5 V, ±10 V, ±25 V, ±50 V

Voltage measurement accuracy:
At 25 °C ambient temperature.
Following 30 minutes warm-up.
Excluding common mode error.

±(0.05% of range + 10 µV)

Input impedance:

1 MΩ, all ranges

Isolation:

350Vpp, Input-to-output, Channel-to-channel

Absolute maximum input without damage:

120 V rms

Maximum common mode voltage:

120 V rms

Min common mode rejection (330Ω unbalance):

>100 dB (DC to 60 Hz)

Channel-to-channel crosstalk rejection: (R_source ≤ 330 Ω; Freq_source ≤ 60 Hz)

> 100 dB at any throughput

Digital Inputs

Number of ports:

7

Type:

MOSFET switch

Configuration:

Programmable as an input or switch

Pull-up value:

4.7 KΩ

Isolation:

None

Input high voltage threshold:

2.4 V minimum

Input low voltage threshold:

0.8 V maximum

Absolute max input without damage:

0 ≤ V ≤ 30 V

Count/Rate

Digital port assignment:

Count: Port 2 configured as input
Rate: Port 3 configured as input

Internal pull-up value:

4.7 kΩ

Input high voltage threshold:

2.4 V

Input low voltage threshold:

0.8 V

Terminal count:

65,535

Maximum rate frequency:

50 kHz

Minimum rate frequency:

0.5 Hz

Maximum count frequency:

50 kHz

Power

Power Consumption:

0.75 Watts (from USB port)

Excitation output:

+15 V dc (-7.5% to +2.5%) at 70% load (47 mA), 67 mA at full load, or max three 4-20mA sensors

ADC Characteristics

Voltage Measurement Resolution:

Range	Resolution
±10 mV	0.305µV
±25 mV	0.763 µV
±50 mV	1.53 µV
±100 mV	3.05µV
±250 mV	7.63 µV
±500 mV	15.26 µV
±1 V	30.5 µV
±2.5 V	76.3 µV
±5 V	152.6 µV
±10 V	305 µV
±25 V	763 µV
±50 V	1.53 mV